Cylindrical battery thermal management system

Abstract

The invention discloses a cylindrical battery thermal management system, comprising a liquid collection header arranged at the bottom of the cylindrical battery, a left end liquid distribution header and a right end liquid distribution header fixedly connected to each other on the opposite side of the liquid collection header, A plurality of serpentine plates connected to and installed between the left liquid distribution header and the right liquid distribution header; the serpentine plates run through between the cells of the array. The thermal management system of a cylindrical battery disclosed by the present invention can quickly balance the temperature difference inside and between the single batteries, reduce heat accumulation, prolong the service life of the battery, and provide a good working temperature environment for the single battery. An efficient and reliable battery thermal management control system can make the power battery work in the optimal temperature range. Through the left and right liquid distribution headers and serpentine plates, the multi-channel staggered convection of coolant is realized, which greatly prolongs the convection path and independent convection.

Description

technical field [0001] The invention relates to the field of electric vehicle batteries, in particular to a cylindrical battery thermal management system. Background technique [0002] With the diversification of the automobile industry and the increasingly severe environmental problems, the new energy automobile industry is developing rapidly. New energy vehicles are the trend of automobile development today, and electric vehicles account for a large proportion of new energy vehicles. The country also attaches great importance to the field of electric vehicles. Among them, electric vehicles have a smaller impact on the environment than traditional vehicles, and are used more and more widely. Electric vehicles refer to vehicles powered by vehicle-mounted power supplies, driven by motors, and meeting the requirements of road traffic and safety regulations. Batteries serve as The heart of electric vehicles is the key to the development of the electric vehicle industry. In add...

AI Technical Summary

Problems solved by technology

[0009] 1) The liquid working medium in the serpentine flat tube flows in a single direction from the distribution header to the collection header. This cooling arrangement will make the cylindrical battery close to the liquid flowing into and out of the serpentine flat tube have a larger temperature difference

[0010] 2) The invention does not consider the cooling of the bottom of the battery

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